19. A harmonic oscillator consists of a 0.015-kg mass on a spring. Its frequency is 2.0 Hz, and the mass has a speed of 0.40 m/sec as it passes the equilibrium position. What is the value of the quantum number n for its energy state? (h = 6.626×10⁻³⁴ J s)
(A) 8.6×10²⁶
(B) 3.4×10¹⁹
(C) 9.1×10²⁹
(D) 5.0×10²⁸
(E) 7.6×10³¹
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統計: 尚無統計資料
統計: 尚無統計資料